2018 TRDOR - tiny coolant drop?

[1996_Valencia_Owen]

When I got my 5th gen - a 2018 mode TRDOR in Feb of this year, I noticed the coolant was literally exactly the Full line.

I now notice after 4 months (purchased in cool February) and 10,000 miles that the coolant is maybe 4-5 mm down from full. Is this pretty normal consumption? I feel like I've driven some stop and go in 99F temps, and done some high load driving in the Sierras, but wasn't sure if that might cause a tiny bit of evaporation or consumption... or if ANY loss is unusual.

Sorry if this seems AR, I just had a 3rd gen and got this 5th gen to be done with colling system repairs.

Thanks!

 

[tristero]

The coolant level will fluctuate slightly based on variables. Less than 1/4 inch seems fine to me.

 

[Hamburgerpimp]

I have had to coolant to the reservoir, It was down to the low mark, but it is 4 years old. No leaks, so I guess it evaporates some off over time.

 

[Lester Lugnut]

I now notice after 4 months (purchased in cool February) and 10,000 miles that the coolant is maybe 4-5 mm down from full.

Mine drops off about that much every 5K miles.

 

[1000MPH]

I just posted about my experience on another thread. I could add fluid all the time to bring it back to the full mark but it if I leave it as is or even just below the low mark it does not go any lower.